The Yellow system has been developed to make the installation of Grant boilers both quick and simple, whilst ensuring trouble free operation, even in the most exposed site conditions. The round low level kits feature self-sealing ducts requiring no silicone or tape for joints, and the unique quick-fit clamp arrangement ensures a perfect seal every time. The new telescopic flue system requires only two simple operations to complete the installation. The kits are compatible with all indoor Grant boilers, including condensing models. The flue terminal has a compact design, making it ideal for installations where the visual appearance is important. The new cone design reduces the possibility of condensate, produced in the combustion process, staining exterior wall surfaces or patio slabs, while providing extra protection for your central heating system. The Grant flue kit provides you with everything necessary to create a suitable flue exhaust system.